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https://issues.apache.org/jira/browse/SPARK-10917?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davies Liu resolved SPARK-10917.
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Resolution: Fixed
Fix Version/s: 1.6.0
Issue resolved by pull request 8971
[https://github.com/apache/spark/pull/8971]
> Improve performance of complex types in columnar cache
> ------------------------------------------------------
>
> Key: SPARK-10917
> URL: https://issues.apache.org/jira/browse/SPARK-10917
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Davies Liu
> Assignee: Davies Liu
> Fix For: 1.6.0
>
>
> Complex types are really really slow in columnar cache, because of kryo
> serializer.
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